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A Note Concerning the Age of the Metamorphism of the Dalradian Rocks of Western Ireland

Published online by Cambridge University Press:  01 May 2009

J. F. Dewey
Affiliation:
Geology Department, University, Manchester, 13.

Abstract

Evidence is adduced to relate the published minimum absolute date of — 475 m.y., for the metamorphism of the Connemara Schists, to its correct position in the Lower Palaeozoic stratigraphy of Western Ireland. The metamorphism pre-dates the Didymograptus extensus zone of the Arenig in Connemara and South Mayo and an Upper Cambrian or Tremadocian age is considered likely.

Type
Articles
Copyright
Copyright © Cambridge University Press 1961

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References

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